Single-Fed Broadband CP Bidirectional Antenna with Double-Layer Diagonally Aligned Plates for Universal UHF-RFID Applications
| Autor: | Sitthichai Dentri, Khanet Pookkapund, Bancha Luadang, Prayoot Akkaraekthalin, Chuwong Phongcharoenpanich |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | International Journal of Antennas and Propagation, Vol 2020 (2020) |
| Druh dokumentu: | article |
| ISSN: | 1687-5869 1687-5877 |
| DOI: | 10.1155/2020/6561534 |
| Popis: | This research proposes a single-fed broadband circularly polarized (CP) bidirectional antenna operable in 840–960 MHz frequency band for readers of universal UHF-RFID applications. The proposed antenna is comprised of upper-layer conductor, lower-layer conductor, and wall patches. The upper-layer conductor consists of two diagonally aligned rectangular copper plates with a feeding gap at the center, and the lower-layer conductor is of two diagonally adjoined rectangular plates. The upper- and lower-layer conductors are adjoined with the wall patches. The diagonal alignment technique of the upper- and lower-layer plates was used to realize circular polarization and improve 3-dB axial ratio (AR) bandwidth. The double layers were deployed to improve impedance bandwidth (|S11| |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
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